In the present work, pure PEEK material was prepared by a hot compression molding technique and the fretting
wear behaviors under high temperatures were investigated using an oscillating reciprocating ball-on-disk tribometer.
Friction surfaces of polished samples are populated with cavities filled with oxidized debris, typical of fretting
phenomenon of interference is very complex.
fatigue mechanism is schematically arranged and illustrated in Figure 3.
While emerging economies are harder hit by these swings in energy prices (higher oil prices gobble up a proportionately larger amount of their GDP), they aren't the only ones fretting
about the latest turn of events.
After many days and years, after multitudinous suns had risen and set and risen again, after expending like a Croesus of time, most of the days and nights granted a sojourner, after fretting
and moiling and losing his way and his temper (and now and again as it seemed, his soul) -- at long last our peregrine did a simple thing -- a thing that might have occurred to a wiser one, as the first thing of all to be done.
Broadcast stocks didn't suffer too badly, not most of them anyway, as Wall Street was said to be in the throes bond fretting
in addition to the habit-forming practice of Greece fretting
tonight that Sarah will be elbowed aside once Jo and Andy's baby is born.
This work aims at studying specific wear: fretting
, friction under small displacement, when the displacement is lower than the contact width between the two materials.
Three-quarters of people generally worry about their cash flow but around four in 10 of them admit to spending more time fretting
than taking action, the survey from Treasury-backed NS&I said.
According to the survey of 1,226 adults from Treasury backed NS and I, three-quarters of people generally worry about their cash flow but around four in 10 of them admit to spending more time fretting
than taking action.